Year	current US$
1973	219999.998807907
1974	920000.016689301
1975	400000.00596046395
1976	70000.0002980232
1977	1340000.0333786
1978	259999.990463257
1979	259999.990463257
1980	680000.007152557
1981	189999.99761581398
1982	319999.99284744303
1983	540000.021457672
1984	280000.001192093
1985	910000.026226044
1986	5800000.19073486
1987	7960000.03814697
1988	9210000.03814697
1989	8100000.38146973
1990	7750000
1991	9399999.61853027
1992	9289999.96185303
1993	16319999.6948242
1994	27030000.6866455
1995	23659999.8474121
1996	23010000.2288818
1997	17959999.084472697
1998	22920000.0762939
1999	23799999.237060502
2000	24950000.762939498
2001	26049999.237060502
2002	25370000.8392334
2003	40049999.237060495
2004	34250000
2005	27540000.915527303
2006	32689998.626709
2007	49479999.5422363
2008	46340000.1525879
2009	43069999.6948242
2010	38119998.9318848
2011	33169998.168945298
2012	41409999.8474121
2013	27309999.4659424
2014	27309999.4659424
2015	21479999.5422363
2016	12890000.3433228
2017	19110000.6103516
2018	16290000.9155273
2019	-9989999.77111816
2020	3180000.0667572
2021	3210000.03814697
2022	3440000.05722046